Rostislavna Mstislavna of Smolensk was born circa 1202 to Mstislav Mstivlavich Udatnyi of Novgorod (c1170-1228) and Maria of Cumania (c1185-c1260) and died 4 May 1344 in Veliky Novgorod, Novgorod Oblast, Russia of unspecified causes. She married Yaroslav II Vsevolodovich of Vladimir (1191-1246) 1218 JL . Notable ancestors include Charlemagne (747-814), Alfred the Great (849-899). Ancestors are from Belarus, Russia, Ukraine, Sweden, the Byzantine Empire, Germany, France, Belgium, the United Kingdom.
Rostislava (baptized Feodosya) Mstislavna is the holy Grand Princess of Vladimir, the mother of Prince Aleksandr Nevsky (1220-1263), presumably the daughter of the Galician prince Mstislav Udalogo, the second wife of the Grand Prince of Vladimir-Suzdal Yaroslav Vsevolodovich of Chernigov (1139-1198), from whom she gave birth to the 9th (according to other sources - 7 or 8- х) sons and 2 daughters. Memory on the day of death May 5 (May 18 ), 3rd week of Pentecost ( Cathedral of the Novgorod Saints ), June 23 (July 6 o.s.) (Cathedral of the Vladimir Saints).
She died in Novgorod, taking monasticism under the name of Euphrosinia, according to some sources, on May 5, 1244, on the other - on May 4, 1241. Two of her tombs are also indicated: one in the St. George's Monastery in Novgorod and the other in the St. George Church in Vladimir.